The cave is called the dark cave because it is made of mostly basalt in addition to limestone. The basalt is a black hard rock, giving it its dark name.... Read more: Dong Hoi - Phong Nha Cave...
Phong Nha – Ke Bang is a National park and UNESCO World Heritage Site in the Bố Trạch and Minh Hóa districts of central Quảng Bình Province in the North... Read more: Phong Nha cave, Dark cave 1...
Phong Nha-Kẻ Bàng is noted for its cave and grotto systems as it is composed of 300 caves and grottos. A 2009 survey brought the total discovered length of the... Read more: Phong nha cave, Paradise cave
Read more: Dong Hoi - Phong Nha Cave...
